CAS 57-55-6 Industrial Grade 99.8% USP Grade Propylene Glycol (PG)

CAS 57-55-6 Industrial Grade 99.8% USP Grade 99.9%Propylene Glycol
GENERAL INFORMATIONCAS NO.: 57-55-6
Formula: C3H8O2
Structural formula :
PG is a colorless liquid with steady viscosity and good water absorption. It is nearly odorless, uninflammable and minutely toxic. It's molecular mass is 76.09. Its viscosity (20ºC), specific heat capacity (20ºC) and latent heat of vaporization (101.3kpa) are respectively 60.5mpa.s, 2.49KJ/(kg.ºC) and 711KJ/kg. It can be mixed and solved with alcohol, water and various organic agents.
SPECIFICATIONTest itemsUSP GradeIndustrial GradeQualified GradeColority (Pt-Co) max51016Purity,wt% >99.999.899.5Moisture,wt%<0.080.10.2Density (g/cm3)1.035-1.0381.035-1.040Index of refraction (nd20)1.431-1.4351.428-1.435AppearanceTransparent colorless liquid,no mechanical impurityAcidity (As H+ )mmol/100g ,<0.0050.010.02Distillation range (IBP-DP)184-190183-190183-190
PACKING AND TRANSPORTATIONIt can be packed by ISO tank,galvanized iron drum, plastic drum,IBC or flexitank etc. It should be stored in cool and windy special warehouse far from fire and transported as a general chemical product.
APPLICATIONPropylene glycol is mainly used for surface coating and glass fiber reinforced unsaturated polyester resin (UPR). It's second largest application is antifreeze, instead of ethylene glycol used in antifreeze aircraft and used as a coolant in the food. It can be used in the production of plasticizer and hydraulic brake fluid. It also can be used as nonionic detergents and as a moisturizer in medicine,cosmetics,animal food and tobacco industry.In addition ,PG can be used for printing ink and epoxy resin, etc.as a good performance of solvent .